Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

ayudante†, coaid†; adjunct; help, helper, help mate, helping hand; midwife; colleague, partner, mate, confrere, cooperator; coadjutor, coadjutrix†; collaborator. ally; friend &c 890, confidant, fidus Achates [Lat.], pal, buddy, alter ego. [criminal law] confederate; accomplice; complice; accessory, accessory after the fact; particeps criminis [Lat.]; socius criminis [Lat.]. aide-de-camp, secretary, clerk, associate, marshal; right-hand, right-hand man, Friday, girl Friday, man Friday, gopher, gofer; candle- holder, bottle-holder; handmaid; servant &c 746; puppet, cat's-paw, jackal†. tool, dupe, stooge, ame damnee [Fr.]; satellite, adherent. votary; sectarian, secretary; seconder, backer, upholder, abettor, advocate, partisan, champion, patron, friend at court, mediator; angel (theater, entertainment). friend in need, Jack at a pinch, deus ex machina [Lat.], guardian angel, tutelary genius.